frost-protected shallow foundation


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frost-protected shallow foundation

A construction method that uses insulation and drainage to artificially raise the frost line of soil to a level that allows relatively short—shallow—foundations.In cold climates,building foundations must extend below the frost line to a depth of soil that does not freeze. Freezing causes soil to heave upward and then sink back again, shifting everything on top of the soil. It does not result in a very stable building base unless one takes steps to prevent soil movement.

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One that has prevailed is the frost-protected shallow foundation, or FPSF, for slab-on-grade homes.
Path to the future: if you build homes, expect to use some of these products and processes in the next few years
Examples of these techniques (all of which are code approved) include advanced framing, raised-heel trusses, airtight drywall approach, frost-protected shallow foundations, and optimizing window design.
Home sweet home: keep it simple with energy-efficient home construction
FROST-PROTECTED SHALLOW FOUNDATIONS, or FPSFs, provide protection against frost damage without the need for excavating below the frost line.
Freeze out: new design guide demonstrates how to stave off frost damage
Frost-protected shallow foundations have now become part of the IRC and have been field tested for more than a decade.
Minimize to maximize: frost-protected shallow foundations. In-line framing. Single-layer subfloors. These techniques can save on your hard costs, at the same time benefiting generations of homeowners. Here's how to shave costs without sacrificing quality or energy efficiency

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